Harbison p



(No Model.)

H. P. H001). STRAIGHT WAY VALVE.

Patented June 19, 1888.

UNITED STATES PATENT OFFICE.

HARRISON P. HOOD, OF INDIANAPOLIS, INDIANA.

STRAIGHT-WAY VALVE.

SPECIFICATION forming part of Letters Patent No. 38 4,849, dated June 19. 1888.

Serial No. 271,537. (X0 model.)

To aZZ whom it may concern:

Be it knownthat I, HARRisoN P. Hoon, a citizen ofthe United States, residing at Indianapolis, in the county of Marion and State of 5 Indiana, have invented a new and useful Straight-\Vay Valve, of which the following is a-specification.

My invention relates to an improvement in a straight-way valve for which Letters Patent No.,375,872 were issued to me January 3, 1888.

The valve described and shown in said Letters Patent consists, essentially, of a cylindrical shell or case having screw-threaded openings in the opposite ends of the case, which open-- ings are cccentrically arranged relatively to the axis of the case, a valve-seat formed around one of said openings, and a valve consisting of a cylindrical disk having an opening eccentrically arranged relatively to the axis of the disk. Said disk has a screw-threaded periphery, which is arranged to turn in a corresponding screw-threaded bearing formed in the interior of the case, and has also on a portion of its periphery cog-teeth, which engage suitable mcchanismfor turning the disk from the exterior of the valvecase. In the valve there shown and described the bearing for the valvedisk is formed integral with the case, and the end of the case, which contains the valve-seat and one of the threaded openings by which. the valve is secured to a line of pipe, is made removable from the rest of the case for the purpose of inserting the valve-disk. This construction is objectionable for large valves, for

5 the reason that the valve-case must be removed invention.

Figure 1 represents a front elevation. Fig. 2 represents a section at a, Fig. 1. Fig. 3 represents a view in perspective of the parts of the valve separated.

A is the valve-case, having in its opposite sides screw-threaded openingsBand 0, adapted G is a cap-plate which covers the opening 0 in the valvecase, and has formed on its up per side a hollow chamber, H, in which is mounted on a short shaft, I, so as to turn therewith, a gear-wheel, J. Shaft I passes through the stuffing-box and gland K, and is turned by a lever, L, secured to its outer end. Project- 7 ing from the under side of the capplate G is a fiat plate, M, having formed therein a screwthreaded cylindrical bearing, N. The valve consists of a circular disk, P, having an opening, r, arranged eccentricallyto the axis of the disk. The peripheral surface of disk 1? is ex tended by means of an annular flange, 8, projeeting from one side of the disk, and a portion of said peripheral surface is screw-threaded to fit the bearing N. On the remainder of the periphery cog-teeth t are formed, which inter mesh with the teeth of the gear-wheel J. The arrangement is such that when the valve-disk has been screwed into its bearing in plate M, and the cap-plate is in position on the valvecase, the plate M will project into the case and rest against one side thereof, and the opening 1' in the disk will register at some point of the revolution of the disk with the openings B and G in the case. the valve-case by bolts a, with the opening in the disk registering with the opening in the case, a hali revolution of gear-wheel J rotates the disk so as to bring its solid portion opposite the openings B and O, and at the same time screws the disk outward in its bearing N thus forcing the disk against the valve-seat and effectually closing the openings.

It will be observed thatwith this construction, when the valve is closed, the pressure of the valve against its seat reacts against the op posite side of the case, which is integral with the side in which the valve-seat is formed, and that therefore there is no tendency to force open the joint between the cap-plate and the valveto receive the ends of the line of pipe, the case The cap-plate being secured to i case. It will be observed, also, that the valvedisk, with its bearing, and the mechanism for rotating the disk, may be removed from the valve-case without disturbing the relation of the case to the pipe or the relation of the valvedisk to its bearing and operating mechanism.

I claim as my invention- 1. In a valve, the hollow valve-case having an opening in one edge to receive the valve and its bearing and openings in two of its sides adapted to receive the ends of a pipe, the interior'valve-seat formed around one of said side openings, the disk havingcog'teeth on its periphery and an eccentricallyarranged opening which registers with the opening in said terior valveseat formed around one of said side openings, the removable cap-plate having a bearing for the valvedisk projecting from its inner side and carrying mechanism on its outer side for turning the disk, and'the eccentrically-perforated disk arranged to turn in said bearing and to movelongitudinally therein when so turned, all combined and arranged to cooperate substantially as specified.

3. In a valve having a valve-case provided with an interior valve -seat and a rotating valve-disk, the combination, with the valvecase and its valve-seat, of a removable capplate having a bearing for the rotating valvedisk projecting from its inner side, the valvedisk mounted in said bearing, and mechanism for turning the valvedisk,mounted also on the cap-plate, all arranged substantially as specified, whereby the valve-disk may be removed from the valve-case without disturbing its re lation to its bearing or its driving mechanism, substantially as set forth.

HARRISON P. HOOD. 

